Hydraulic valve.



s. s. GASKEY.

HYDRAULIC VALVE. APPLIOATION FILED MAY 1a, 1903.

920,268. Patented May 4, 1909.

2 SHEETS-SHEET 1.

I IE? Wi in no Cutout; o

S. S. GASKEY.

HYDRAULIC VALVE.

APPLIOATION run) my 13, 1908.

920,268. Patented May 4,1909.

2 SHEETS-SHEET 2.

UNITED sTA'rns PATENT OF ICE. f

SAMUEL S. CASKEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CASKEYVALVE COMPANY, OF NEWYORK, N. Y., A CORPORATION OF NEW YORK.

HYDRAULIC VALVE.

Specification of Letters Patent.

Patented May 4,1909.

I Application med Kay 13, 1908, Serial No. 482,736.

To all whom it may concern:

a citizen of the United States, residing in forth. I

the city and county of Philadelphia, State of Pennsylvania, haveinvented a new and .nseful Hydraulic Valve, of which the followin is aspecification.

y invention relates to a new and useful valve" which is adapted for usewith steam or air, as a hydraulic or a blow-off valve, and consists inproviding means whereby the valve becomes more effective as the pressureis increased.

It further consists of a sealing bushing which is ada ted to preventleakage around the plug. It rther consists of novel details ofconstructioh, all as will be hereinafter fully set Figure 1 represents avertical sectional view of a valve embodying my invention. Fig. 2represents a bottom p an view thereof. Flig. represents a verticalsectional view s o resents a horizontal sectional view of the valveshown in Fig. 3.

Similar'numerals of reference indicate corresponding parts in thefigures.

eferring to the draw' s. It is well known among hydraulic engineers thatthe vital parts of hydraulic systems are the operative valves and stopvalves and the expense of such systems is in the repairs that must bemade on the valves aside from the fact that while all such valves arestanding idle, they are wasting energfi at high pressure, said wastereturning t rough the exhaust pipe to the pum tank and it is furtherwell known that wit the present form of valves the grit which comes 7through the pipe even though the water be filtered, may prevent closureof the vavle, thus permitting eakage and forming grooves in the valve,as will be evident. My invention is designed to overcome these defectsand in the drawings, I have shown a construction which I have foundinpractice to operate successfully, but it will be evident that thearranges ment of the parts may be varied and other instmmentahties maybe empolyed which come within the scope of my invention and I do not,therefore desire to be limited in every instance to the exact form asherein shown and described, but deslre to make such ch anges as may benecessary.

a spring for assisting in retaining the sea ing bushing in position.Fig. 4 rep 1 designates the body of the valve having the threadedopening 2 at the pressure end which is adapted to be connected up withan accumulator, compressor or boiler depending upon the use desired and3 is a threaded opening by which the valve is connected to the ram forhydraulic use, with the engine for steam and air and with a pipe whichdischarges to the atmosphere when the valve is used as a blow-off.

4 designates the exhaust opening which is connected with a pipe leadingto any suitable point.

5 desi nates a bore in the valve body communicating with the threadedopening 3, and 6 designates a bore communicating with the exhaust 4.

7 designates a circular lug, the walls of which are straight as willtiius be understood from Figs. 1 and 3, which is provided with a bore 8and the branch 9 leading therefrom, said plug being rotatably mounted ina suitable opening ii the body, the walls of which opening are circularto correspond with thato the lug.

10 esignates a collar on the plug which abuts a suitable portion of thebody 1 and said plug is provided with the threaded end,

11 for the reception of the nuts 12 for locking the parts in position,said plug also having the s uared end 13 for engagement by a wrenc 1 orother operating tool.

Movably mounted in a bore in the body 1 is the sealing bushing 14 theinner face of which is curved to correspond to the curvature of the wallof the plug 7 and with which the said bushing makes a ground jointconnection, it being understood that the bushing is preferably of softmetal. A suitable bore 15 is provided in the bushing which correspondsto the bore 8 in the plug 7.

16 designates a retaining. plug which is screwed or otherwise securedwithin the body 1 at a suitable point with respect to the bushing, itbeing noted that the plug in Fig. 1 is provided with a bore' 17 which islarger than the bore 15 of the bushing 14, whereby it will the plug 7.

the sealing bushing proper position against In Fi 1, I have omitted thespring as it is not a ways necessary for the operation of the arts.

T e operationvof the'valve will be readily apparent. s own in Fig. 4,the bore 8 is in communication with the exhaustbore 6 and the branch- 9is in communication with the bore 5 so that the valve is exhausting, itbeing noted plug 7 is rotated in t e direction indicated by held a alnst.the

the arrow in Fig. 4, bringing the bore 8 into line with the bore 15 andwith the bore 5 so that a straight passage for the fluid is provided.

It will be noted that by this construction the incoming fluid isdirected in a proper manner against the bushing 14 so as to tightlyforce the same always against the plug 7 so that no leakage can occurbetween the walls of the bushing 14 and the walls of the plug 7, sincethe pressure will tend to force the sealing bushing more firmly againstthe plu the greater the pressure and this action wi I be assisted by thespring 18 when the latter is" used. In addition, as the bushing 14wears, it being of softer material, it will still be moved u or forcedinto proper position and lug 7 and the ground joint forme between t hewalls of the said bushing and plug will be so intimate as to reventpassage of any grit therebetween. neces sary, may provide on the plug 7the packing 19, which is referably of leather or any suitable materia inorder to prevent leaking of any back pressure while in the bushing I mayprovide a. packing 20 which is of leather or any suitable material,which will prevent any leakage between the walls of thebody 1 and thesaid bushing 14. Any suitable means may be employed for sto ping the T0-tation of the plug so that the ores or passages will be 1n suitableposition and in the drawings, I have shown a lu 21 on the bod 1 and awasher 22 mounte to rotate wit the plug 14 and having the shoulders 23thereon which abut the lug 21, as best seen in Fig. 2, at the propertime, in order to lo- 1 the body 1 after which the bushing 14 andcatethe bores in suitable position. Attentionis further directed to the factthat the parts of the valve can be removed Without releasing the bodyportion from its suitable connection, this being more 7 particularlyshown in Fig. 3, wherein by removing the nuts 12 the plug 7 can bewithdrawn from spring 18 can also be withdrawn through the clrcularopeningl in the body'which receives the plug 7. T e advantages derivedfrom When the plug is in the position" this will be evident to anyone.While I have shown 1 the bushing 14 considerably longer than that shownin Fig. 3, it will of course be apparent that the bushing 14 in Fig. 1can be made any suitable length in order to be removed in a similarmanner as above described, it being only necessary to place theretaining plug '16 closer to the plug 17 than is shown in F1 1. Itwill-be further apparent that while I have described the plug 7 as beingrotated in the body,1,I may, if desired, or find it necessar have theplug stationary and rotate the b0 y 1 around the plug with the -same;effect as reviously described, in which eventfiexib e connectionswouldbe made for the bod portionl. It will be understood that in the caims while I I have-called for a rotatable plug, I desire it to beunderstood thateither the body 1 or plug. 7 may be rotated as may berequired it simply being necessary to have relative rotation between theplug and the body.

I Having thus described my invention,=wha t I claim as new and desire tosecure by Letters Patent, is:'

1. In a valve, a body having a circular opening, a rotatable cylindricalplug seated in said opening and contacting with the 'walls thereof, asealing bushing abutting said plug and reventing leakage therebetween,and packing between the body andthe bushing for preventin leakagetherebetween.-

2. In a va ve, a body having a circular opening, a rotatable cylindricalplug seated to be held tightly against said plu by the.

pressure in the valve and packing etween the body and the bushing,preventing leakage therebetween.

3. In a valve, a body having a bore therethrough, and a circular opemngtherein, a rotatable cylindrical lug in said 0 ening contacting with thewa ls thereof and aving a bore therein and a branch leading therefrom, abushing in the.bore of said body v adapted to abut said plu and having abore.

that the bore will be in ro er posltlon. S El: S. CASKEY. Witnesses:

C. D. MCVAY,

E. B. MORRIS.

adapted to register w1th t e bore of said plug

